【摘要】 用西德Bruke,MSL-300核磁共振谱仪研究了三个不同系列的苯乙烯-异戊二烯嵌段共聚物的固体回波谱。用PASCAL语言在谱仪提供的计算机上、用线性最小二乘法回归分析把实验曲线分解成快速和慢速两个组分,它们分别对应于嵌段共聚物中刚性相和流动相,从而给出样品两相结构的定性定量信息。更多还原

【Abstract】 Pulsed Nuclear Magnetic Resonance measurement is presented for three series of the block polymer of styrene and isoprene. The solid echo measurement was made on a Bruker MSL-300 NMR Spectrometer operating at 300 MHz. The solid echo signals were decomposed by means, of linear least square regression into a fast Gaussian and a slow exponential components associated with the rigid and mobile phase respectively, using PASCAL language and lealed with on the Aspect-3000 computer which is equipped on the spectrometer. The qualitative and quantitative informations of the phase structure and molecular motion can be obtained by means of this method.更多还原